Definition
The exposure of users' chat histories — their prompts and the AI's answers — to people who should not see them, often through missing access controls in AI chat products. Transcripts are a crown jewel because they routinely contain proprietary, financial, or personal information, including children's data.
Why it matters
One AI companion fleet compromise leaked roughly 13 million conversations, and CRM chat assistants leaked transcripts to low-privilege users. Organisations should treat every AI conversation log as sensitive data, because leaks can cross customer, business-unit, and even age-of-user boundaries and trigger serious liability.